Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
375
CDUS41 KLWX 180623
CLIDCA
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
223 AM EDT THU SEP 18 2025
...................................
...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR SEPTEMBER 17 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 69 3:29 PM 96 1991 80 -11 81
MINIMUM 62 6:25 AM 44 1923 64 -2 69
AVERAGE 66 72 -6 75
PRECIPITATION (IN)
YESTERDAY 0.04 3.26 1876 0.14 -0.10 0.10
MONTH TO DATE 3.36 2.24 1.12 0.12
SINCE SEP 1 3.36 2.24 1.12 0.12
SINCE JAN 1 30.62 30.15 0.47 29.21
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 1 8 -7 10
MONTH TO DATE 111 168 -57 128
SINCE SEP 1 111 168 -57 128
SINCE JAN 1 1576 1620 -44 1843
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 14.1
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 11:00 AM
LOWEST 80 12:00 AM
AVERAGE 87
..........................................................
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 91 1898
1921
1927
MINIMUM TEMPERATURE (F) 63 45 1937
SUNRISE AND SUNSET
SEPTEMBER 18 2025.....SUNRISE 6:52 AM EDT SUNSET 7:11 PM EDT
SEPTEMBER 19 2025.....SUNRISE 6:53 AM EDT SUNSET 7:09 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$